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Rajagopal L, Huang M, Mahjour S, Ryan C, Elzokaky A, Svensson KA, Meltzer HY. The dopamine D1 receptor positive allosteric modulator, DETQ, improves cognition and social interaction in aged mice and enhances cortical and hippocampal acetylcholine efflux. Behav Brain Res 2024; 459:114766. [PMID: 38048913 DOI: 10.1016/j.bbr.2023.114766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/06/2023] [Accepted: 11/15/2023] [Indexed: 12/06/2023]
Abstract
Dopamine (DA) D1 and D2 receptors (Rs) are critical for cognitive functioning. D1 positive allosteric modulators (D1PAMs) activate D1Rs without desensitization or an inverted U-shaped dose response curve. DETQ, [2-(2,6-dichlorophenyl)-1-((1S,3R)-3-(hydroxymethyl)-5-(2-hydroxypropan-2-yl)-1-methyl-3,4-dihydroisoquinolin-2(1H)-yl)ethan-1-one] is highly selective for the human D1Rs as shown in humanized D1R knock-in (hD1Ki) mice. Here, we have ascertained the efficacy of DETQ in aged [13-23-month-old (mo)] hD1Ki mice and their corresponding age-matched wild-type (WT; C57BL/6NTac) controls. We found that in aged mice, DETQ, given acutely, subchronically, and chronically, rescued both novel object recognition memory and social behaviors, using novel object recognition (NOR) and social interaction (SI) tasks, respectively without any adverse effect on body weight or mortality. We have also shown, using in vivo microdialysis, a significant decrease in basal DA and norepinephrine, increase in glutamate (Glu) and gamma-amino butyric acid (GABA) efflux with no significant changes in acetylcholine (ACh) levels in aged vs young mice. In young and aged hD1Ki mice, DETQ, acutely and subchronically increased ACh in the medial prefrontal cortex and hippocampal regions in aged hD1Ki mice without affecting Glu. These results suggest that the D1PAM mechanism is of interest as potential treatment for cognitive and social behavioral deficits in neuropsychiatric disorders including but not restricted to neurodegenerative disorders, such as Parkinson's disease.
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Affiliation(s)
- Lakshmi Rajagopal
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Mei Huang
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Sanaz Mahjour
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Chelsea Ryan
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Ahmad Elzokaky
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Kjell A Svensson
- Neuroscience Discovery, Eli Lilly & Company, Indianapolis, IN, USA
| | - H Y Meltzer
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA.
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Pitton Rissardo J, Caprara ALF. Neuroimaging Techniques in Differentiating Parkinson's Disease from Drug-Induced Parkinsonism: A Comprehensive Review. Clin Pract 2023; 13:1427-1448. [PMID: 37987429 PMCID: PMC10660852 DOI: 10.3390/clinpract13060128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/19/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023] Open
Abstract
Neuroimaging can provide significant benefits in evaluating patients with movement disorders associated with drugs. This literature review describes neuroimaging techniques performed to distinguish Parkinson's disease from drug-induced parkinsonism. The dopaminergic radiotracers already reported to assess patients with drug-induced parkinsonism are [123I]-FP-CIT, [123I]-β-CIT, [99mTc]-TRODAT-1, [18F]-DOPA, [18F]-AV-133, and [18F]-FP-CIT. The most studied one and the one with the highest number of publications is [123I]-FP-CIT. Fludeoxyglucose (18F) revealed a specific pattern that could predict individuals susceptible to developing drug-induced parkinsonism. Another scintigraphy method is [123I]-MIBG cardiac imaging, in which a relationship between abnormal cardiac imaging and normal dopamine transporter imaging was associated with a progression to degenerative disease in individuals with drug-induced parkinsonism. Structural brain magnetic resonance imaging can be used to assess the striatal region. A transcranial ultrasound is a non-invasive method with significant benefits regarding costs and availability. Optic coherence tomography only showed abnormalities in the late phase of Parkinson's disease, so no benefit in distinguishing early-phase Parkinson's disease and drug-induced parkinsonism was found. Most methods demonstrated a high specificity in differentiating degenerative from non-degenerative conditions, but the sensitivity widely varied in the studies. An algorithm was designed based on clinical manifestations, neuroimaging, and drug dose adjustment to assist in the management of patients with drug-induced parkinsonism.
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Bondi H, Chiazza F, Masante I, Bortolotto V, Canonico PL, Grilli M. Heterogenous response to aging of astrocytes in murine Substantia Nigra pars compacta and pars reticulata. Neurobiol Aging 2023; 123:23-34. [PMID: 36630756 DOI: 10.1016/j.neurobiolaging.2022.12.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 12/21/2022] [Indexed: 12/30/2022]
Abstract
Currently, little is known about the impact of aging on astrocytes in substantia nigra pars compacta (SNpc), where dopaminergic neurons degenerate both in physiological aging and in Parkinson's disease, an age-related neurodegenerative disorder. We performed a morphometric analysis of GFAP+ astrocytes in SNpc and, for comparison, in the pars reticulata (SNpr) of young (4-6 months), middle-aged (14-17 months) and old (20-24 months) C57BL/6J male mice. We demonstrated an age-dependent increase of structural complexity only in astrocytes localized in SNpc, and not in SNpr. Astrocytic structural remodelling was not accompanied by changes in GFAP expression, while GFAP increased in SNpr of old compared to young mice. In parallel, transcript levels of selected astrocyte-enriched genes were evaluated. With aging, decreased GLT1 expression occurred only in SNpc, while xCT transcript increased both in SNpc and SNpr, suggesting a potential loss of homeostatic control of extracellular glutamate only in the subregion where age-dependent neurodegeneration occurs. Altogether, our results support an heterogenous morphological and biomolecular response to aging of GFAP+ astrocytes in SNpc and SNpr.
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Affiliation(s)
- Heather Bondi
- Laboratory of Neuroplasticity, University of Piemonte Orientale, Novara, Italy; Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Fausto Chiazza
- Laboratory of Neuroplasticity, University of Piemonte Orientale, Novara, Italy; Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Irene Masante
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Valeria Bortolotto
- Laboratory of Neuroplasticity, University of Piemonte Orientale, Novara, Italy; Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Pier Luigi Canonico
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Mariagrazia Grilli
- Laboratory of Neuroplasticity, University of Piemonte Orientale, Novara, Italy; Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy.
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Echogenicity and size of substantia nigra on transcranial sonography (TCS) in patients with attention-deficit/hyperactivity disorder and healthy children aged 6–12 years: a comparative study. THE EGYPTIAN JOURNAL OF NEUROLOGY, PSYCHIATRY AND NEUROSURGERY 2023. [DOI: 10.1186/s41983-022-00579-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Abstract
Background
Attention-deficit/hyperactivity disorder (ADHD) is one of the most common neuropsychiatric disorders. Children with ADHD may experience significant functional problems, such as academic concerns at school, poor interpersonal relationships and low self-esteem. Current models of ADHD suggest that it is associated with functional impairments in dopamine and norepinephrine systems. The substantia nigra in the midbrain produces the largest amount of dopamine in the brain. The present study was conducted using TCS to compare the size and echogenicity of substantia nigra between ADHD and healthy children.
Results
This cross-sectional, analytical study was conducted on 68 (34 ADHD and 34 healthy individuals) aged 6–12 years. Based on the results obtained, the hyper-echogenicity of SN in control and ADHD groups were 33.3% and 66.7% (P < 0.001) and hypo-echogenicity of thalamic nuclei were 55.2% and 44.8% (P < 0.05), respectively. Interestingly, the TCS results of healthy children with a positive family history of ADHD were similar to results for patients with the disorder.
Conclusions
The echogenicity of Substantia nigra and thalamus nucleus among children and adolescents with ADHD is significantly higher from that in healthy children.
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Sukhorukov V, Magnaeva A, Baranich T, Gofman A, Voronkov D, Gulevskaya T, Glinkina V, Illarioshkin S. Brain Neurons during Physiological Aging: Morphological Features, Autophagic and Mitochondrial Contribution. Int J Mol Sci 2022; 23:ijms231810695. [PMID: 36142604 PMCID: PMC9501539 DOI: 10.3390/ijms231810695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
Accumulating data suggest that the brain undergoes various changes during aging. Among them are loss of both white and gray matter, neurons and synapses degeneration, as well as oxidative, inflammatory, and biochemical changes. The above-mentioned age-related features are closely related to autophagy and mitochondria. Therefore, we aimed to reveal the most peculiar morphological features of brain nervous tissue and to characterize the expression of autophagy and mitochondrial immunohistochemical biomarkers in neurons of different human brain zones during aging. Counting the number of neurons as well as Microtubule-associated proteins 1A/1B light chain 3B (LC3B), Heat shock protein 70 (HSP70), Lysosome-associated membrane protein type 2A (LAMP2A), Alpha subunit of ATP synthase (ATP5A), and Parkinson disease protein 7 (DJ1) immunohistochemical staining were performed on FFPE samples of human prefrontal cortex, corpus striatum, and hippocampus obtained from autopsy. Statistical analysis revealed a loss of neurons in the studied elderly group in comparison to the young group. When the expression of macroautophagy (LC3B), chaperon-mediated autophagy (HSP70, LAMP2A), and mitochondrial respiratory chain complex V (ATP5A) markers for the young and elderly groups were compared, the latter was found to have a significantly higher rate of optical density, whilst there was no significance in DJ1 expression. These findings, while preliminary, suggest that both autophagy and mitochondria are involved in neuronal maintenance during aging and could indicate their potential role in adaptive mechanisms that occur in aging.
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Affiliation(s)
- Vladimir Sukhorukov
- Department for Brain Research, Research Center of Neurology, 125367 Moscow, Russia
| | - Alina Magnaeva
- Department for Brain Research, Research Center of Neurology, 125367 Moscow, Russia
- Correspondence:
| | - Tatiana Baranich
- Department for Brain Research, Research Center of Neurology, 125367 Moscow, Russia
- Department for Histology, Embryology, and Cytology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Anna Gofman
- International Medical Faculty, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Dmitry Voronkov
- Department for Brain Research, Research Center of Neurology, 125367 Moscow, Russia
| | - Tatiana Gulevskaya
- Department for Brain Research, Research Center of Neurology, 125367 Moscow, Russia
| | - Valeria Glinkina
- Department for Histology, Embryology, and Cytology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Sergey Illarioshkin
- Department for Brain Research, Research Center of Neurology, 125367 Moscow, Russia
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6
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Magnaeva AS, Gulevskaya TS, Anufriev PL, Baranich TI, Sukhorukov VS. [Morphological characteristics of the brain nervous tissue during aging]. Arkh Patol 2022; 84:20-28. [PMID: 35880596 DOI: 10.17116/patol20228404120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Identification of morphological manifestations and evaluation of morphometric parameters of the nervous tissue in various structures of the human brain during aging. MATERIAL AND METHODS Autopsy material was obtained from patients whose causes of death were not associated with neurological diseases. Three age groups were studied: young (35-45 years old) (n=10); eldery (75-89 years old) (n=20); centenarians (over 90 years old) (n=10). Quantitative analysis of large neurons in the compact part of the substantia nigra, basal ganglia, layer V of the cortex, and the pyramidal layer of the hippocampus was carried out. In addition, the brain mass, the thickness of the cortex of the precentral gyrus were measured, the glial index was calculated, and the morphological signs of age-related involution of the brain tissue and intracerebral vessels were assessed. RESULTS In senile and centenarians, compared with young people, there was a progressive reduction in large neurons of layer V of the cortex, basal ganglia, the pyramidal layer of the hippocampus and substantia nigra, a decrease in brain mass and thickness of the cortex of the precentral gyrus, as well as an increase in the glial index. Changes in blood vessels characteristic of aging are described. Also, during aging, signs characteristic of neurodegeneration were found. CONCLUSION The results of the study confirm that such brain structures as the cortex of the precentral gyrus, the hippocampus, the basal ganglia, and the substantia nigra lose large neurons with age, followed by the development of gliosis. The identified morphological changes characteristic of aging are phenomenologically similar to a certain set of morphological changes in neurodegenerative diseases of late age.
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Affiliation(s)
| | | | | | - T I Baranich
- Research Center of Neurology, Moscow, Russia.,Pirogov Russian National Research Medical University, Moscow, Russia
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Rani L, Ranjan Sahu M, Chandra Mondal A. Age-related Mitochondrial Dysfunction in Parkinson's Disease: New Insights Into the Disease Pathology. Neuroscience 2022; 499:152-169. [PMID: 35839924 DOI: 10.1016/j.neuroscience.2022.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/13/2022] [Accepted: 07/07/2022] [Indexed: 12/14/2022]
Abstract
Aging is a progressive loss of physiological function that increases risk of disease and death. Among the many factors that contribute to human aging, mitochondrial dysfunction has emerged as one of the most prominent features of the aging process. It has been linked to the development of various age-related pathologies, including Parkinson's disease (PD). Mitochondria has a complex quality control system that ensures mitochondrial integrity and function. Perturbations in these mitochondrial mechanisms have long been linked to various age-related neurological disorders. Even though research has shed light on several aspects of the disease pathology, the underlying mechanism of age-related factors responsible for individuals developing this disease is still unknown. This review article aims to discuss the role of mitochondria in the transition from normal brain aging to pathological brain aging, which leads to the progression of PD. We have discussed the emerging evidence on how age-related disruption of mitochondrial quality control mechanisms contributes to the development of PD-related pathophysiology.
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Affiliation(s)
- Linchi Rani
- Laboratory of Cellular and Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, Delhi, India
| | - Manas Ranjan Sahu
- Laboratory of Cellular and Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, Delhi, India
| | - Amal Chandra Mondal
- Laboratory of Cellular and Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, Delhi, India.
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8
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Speranza L, di Porzio U, Viggiano D, de Donato A, Volpicelli F. Dopamine: The Neuromodulator of Long-Term Synaptic Plasticity, Reward and Movement Control. Cells 2021; 10:735. [PMID: 33810328 PMCID: PMC8066851 DOI: 10.3390/cells10040735] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/20/2021] [Accepted: 03/23/2021] [Indexed: 01/11/2023] Open
Abstract
Dopamine (DA) is a key neurotransmitter involved in multiple physiological functions including motor control, modulation of affective and emotional states, reward mechanisms, reinforcement of behavior, and selected higher cognitive functions. Dysfunction in dopaminergic transmission is recognized as a core alteration in several devastating neurological and psychiatric disorders, including Parkinson's disease (PD), schizophrenia, bipolar disorder, attention deficit hyperactivity disorder (ADHD) and addiction. Here we will discuss the current insights on the role of DA in motor control and reward learning mechanisms and its involvement in the modulation of synaptic dynamics through different pathways. In particular, we will consider the role of DA as neuromodulator of two forms of synaptic plasticity, known as long-term potentiation (LTP) and long-term depression (LTD) in several cortical and subcortical areas. Finally, we will delineate how the effect of DA on dendritic spines places this molecule at the interface between the motor and the cognitive systems. Specifically, we will be focusing on PD, vascular dementia, and schizophrenia.
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Affiliation(s)
- Luisa Speranza
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA;
| | - Umberto di Porzio
- Institute of Genetics and Biophysics “Adriano Buzzati Traverso”, CNR, 80131 Naples, Italy
| | - Davide Viggiano
- Department of Translational Medical Sciences, Genetic Research Institute “Gaetano Salvatore”, University of Campania “L. Vanvitelli”, IT and Biogem S.c.a.r.l., 83031 Ariano Irpino, Italy; (D.V.); (A.d.D.)
| | - Antonio de Donato
- Department of Translational Medical Sciences, Genetic Research Institute “Gaetano Salvatore”, University of Campania “L. Vanvitelli”, IT and Biogem S.c.a.r.l., 83031 Ariano Irpino, Italy; (D.V.); (A.d.D.)
| | - Floriana Volpicelli
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, 80131 Naples, Italy;
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9
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Cleal M, Fontana BD, Double M, Mezabrovschi R, Parcell L, Redhead E, Parker MO. Dopaminergic modulation of working memory and cognitive flexibility in a zebrafish model of aging-related cognitive decline. Neurobiol Aging 2021; 102:1-16. [PMID: 33676049 DOI: 10.1016/j.neurobiolaging.2021.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 01/20/2021] [Accepted: 02/04/2021] [Indexed: 02/05/2023]
Abstract
Healthy aging is associated with a decline in memory and executive function, which have both been linked with aberrant dopaminergic signaling. We examined the relationship between cognitive performance and dopamine function of young and aging zebrafish (Danio rerio). We revealed age-related decreases in working memory and cognitive flexibility in the Free-Movement Pattern (FMP) Y-maze. An increase in drd5 gene expression in aging adults coincided with a decrease in cognitive performance. Treatment with a D1/D5 receptor agonist (SKF-38393, 35 µM) 30 minutes prior to behavioral assessment resulted in improved working memory in aging zebrafish, but no effect in younger adults. However, an "overdosing" effect caused by agonist treatment resulted in downregulation of dat expression in 6-month old, treated zebrafish. The translational relevance of these findings was tested in humans by analyzing exploratory behavior in young-adult, 18-35-year olds, and aged adults, 70+ year olds, in a virtual FMP Y-maze. Our findings revealed similar age-related decline in working memory. Thus, strongly supporting zebrafish as a translational model of aging and cognitive decline.
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Affiliation(s)
- Madeleine Cleal
- Brain and Behaviour Lab, School of Pharmacy and Biomedical Sciences, University of Portsmouth, UK.
| | - Barbara D Fontana
- Brain and Behaviour Lab, School of Pharmacy and Biomedical Sciences, University of Portsmouth, UK
| | - Molly Double
- Brain and Behaviour Lab, School of Pharmacy and Biomedical Sciences, University of Portsmouth, UK
| | - Roxana Mezabrovschi
- Brain and Behaviour Lab, School of Pharmacy and Biomedical Sciences, University of Portsmouth, UK
| | - Leah Parcell
- Brain and Behaviour Lab, School of Pharmacy and Biomedical Sciences, University of Portsmouth, UK
| | | | - Matthew O Parker
- Brain and Behaviour Lab, School of Pharmacy and Biomedical Sciences, University of Portsmouth, UK; The International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA, USA.
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10
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Sun M, McDonald SJ, Brady RD, Collins-Praino L, Yamakawa GR, Monif M, O'Brien TJ, Cloud GC, Sobey CG, Mychasiuk R, Loane DJ, Shultz SR. The need to incorporate aged animals into the preclinical modeling of neurological conditions. Neurosci Biobehav Rev 2019; 109:114-128. [PMID: 31877345 DOI: 10.1016/j.neubiorev.2019.12.027] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/04/2019] [Accepted: 12/19/2019] [Indexed: 12/14/2022]
Abstract
Neurological conditions such as traumatic brain injury, stroke, Parkinson's disease, epilepsy, multiple sclerosis, and Alzheimer's disease are serious clinical problems that affect millions of people worldwide. The majority of clinical trials for these common conditions have failed, and there is a critical need to understand why treatments in preclinical animal models do not translate to patients. Many patients with these conditions are middle-aged or older, however, the majority of preclinical studies have used only young-adult animals. Considering that aging involves biological changes that are relevant to the pathobiology of neurological diseases, the lack of aged subjects in preclinical research could contribute to translational failures. This paper details how aging affects biological processes involved in neurological conditions, and reviews aging research in the context of traumatic brain injury, stroke, Parkinson's disease, epilepsy, multiple sclerosis, and Alzheimer's disease. We conclude that aging is an important, but often overlooked, factor that influences biology and outcomes in neurological conditions, and provide suggestions to improve our understanding and treatment of these diseases in aged patients.
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Affiliation(s)
- Mujun Sun
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia
| | - Stuart J McDonald
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia; Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC 3086, Australia
| | - Rhys D Brady
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia; Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC 3052, Australia
| | - Lyndsey Collins-Praino
- Department of Medical Sciences, Adelaide Medical School, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Glenn R Yamakawa
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia
| | - Mastura Monif
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia
| | - Terence J O'Brien
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia; Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC 3052, Australia; Department of Neurology, Alfred Health, Melbourne, VIC 3004, Australia
| | - Geoffrey C Cloud
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia; Department of Stroke Services, Alfred Hospital, Melbourne, VIC 3004, Australia
| | - Christopher G Sobey
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC 3086, Australia
| | - Richelle Mychasiuk
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia
| | - David J Loane
- Department of Anesthesiology and Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
| | - Sandy R Shultz
- Department of Neuroscience, Monash University, Melbourne, VIC 3004, Australia; Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC 3052, Australia; Department of Neurology, Alfred Health, Melbourne, VIC 3004, Australia.
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11
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Zhang G, Kang Y, Feng X, Cui R, Guo Q, Ji X, Huang Y, Ma Y, Liu S, Shi G. LncRNAs down-regulate Myh1, Casr, and Mis18a expression in the Substantia Nigra of aged male rats. Aging (Albany NY) 2019; 11:8313-8328. [PMID: 31576812 PMCID: PMC6814601 DOI: 10.18632/aging.102321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/21/2019] [Indexed: 12/14/2022]
Abstract
In this study, we used high-throughput RNA sequencing to identify mRNAs, long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs) that are differentially expressed in the Substantia Nigra (SN) of aged and young rats. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses were used to perform functional annotation of mRNAs that were either differentially expressed themselves (DEMs), targeted by differentially expressed lncRNAs (DELs), or the parents of differentially expressed circRNAs (DECs). A total of 112 DEMs, 163 DELs, and 98 DECs were found in the SN of aged rats. The down-regulated lncRNA NONRATT010417.2 targeted the down-regulated mRNA Myh1, while the down-regulated lncRNA NONRATT015586.2 and the up-regulated lncRNAs NONRATT000490.2 and NONRATT007029.2 all targeted the down-regulated mRNAs Casr and Mis18a. Western blots and RT-qPCR revealed that Myh1, Casr, and Mis18a protein and mRNA expression were significantly reduced in aged rats compared to young rats. This study improves our understanding of the transcriptional alterations underlying aging-related changes in the SN and provides a foundation for future studies of associated molecular mechanisms.
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Affiliation(s)
- Guoliang Zhang
- Department of Neurobiology, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China.,Department of Human Anatomy, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Yunxiao Kang
- Department of Neurobiology, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Xu Feng
- Hebei Laboratory Animal Center, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Rui Cui
- Department of Human Anatomy, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Qiqing Guo
- Department of Neurobiology, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Xiaoming Ji
- Department of Neurobiology, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Yuanxiang Huang
- Grade 2015 Eight-year Clinical Medicine Program, School of Basic Medical Sciences, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Yannan Ma
- Department of Neurobiology, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Shufeng Liu
- Hebei Laboratory Animal Center, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
| | - Geming Shi
- Department of Neurobiology, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China.,Neuroscience Research Center, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China.,Hebei Key Laboratory of Forensic Medicine, Department of Forensic Medicine, Hebei Medical University, Hebei Province, Shijiazhuang, 050017, China
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12
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Ivanov MV, Kutukova KA, Khudoerkov RM. Morphochemical Changes in the Human Striatum in Aging. ADVANCES IN GERONTOLOGY 2019. [DOI: 10.1134/s207905701903007x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Altered function of neuronal L-type calcium channels in ageing and neuroinflammation: Implications in age-related synaptic dysfunction and cognitive decline. Ageing Res Rev 2018; 42:86-99. [PMID: 29339150 DOI: 10.1016/j.arr.2018.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 01/10/2018] [Accepted: 01/11/2018] [Indexed: 12/29/2022]
Abstract
The rapid developments in science have led to an increase in human life expectancy and thus, ageing and age-related disorders/diseases have become one of the greatest concerns in the 21st century. Cognitive abilities tend to decline as we get older. This age-related cognitive decline is mainly attributed to aberrant changes in synaptic plasticity and neuronal connections. Recent studies show that alterations in Ca2+ homeostasis underlie the increased vulnerability of neurons to age-related processes like cognitive decline and synaptic dysfunctions. Dysregulation of Ca2+ can lead to dramatic changes in neuronal functions. We discuss in this review, the recent advances on the potential role of dysregulated Ca2+ homeostasis through altered function of L-type voltage gated Ca2+ channels (LTCC) in ageing, with an emphasis on cognitive decline. This review therefore focuses on age-related changes mainly in the hippocampus, and with mention of other brain areas, that are important for learning and memory. This review also highlights age-related memory deficits via synaptic alterations and neuroinflammation. An understanding of these mechanisms will help us formulate strategies to reverse or ameliorate age-related disorders like cognitive decline.
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Ortner NJ, Bock G, Dougalis A, Kharitonova M, Duda J, Hess S, Tuluc P, Pomberger T, Stefanova N, Pitterl F, Ciossek T, Oberacher H, Draheim HJ, Kloppenburg P, Liss B, Striessnig J. Lower Affinity of Isradipine for L-Type Ca 2+ Channels during Substantia Nigra Dopamine Neuron-Like Activity: Implications for Neuroprotection in Parkinson's Disease. J Neurosci 2017; 37:6761-6777. [PMID: 28592699 PMCID: PMC6596555 DOI: 10.1523/jneurosci.2946-16.2017] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 05/08/2017] [Accepted: 05/13/2017] [Indexed: 12/21/2022] Open
Abstract
Ca2+-influx through L-type Ca2+-channels (LTCCs) is associated with activity-related stressful oscillations of Ca2+ levels within dopaminergic (DA) neurons in the substantia nigra (SN), which may contribute to their selective degeneration in Parkinson's disease (PD). LTCC blockers were neuroprotective in mouse neurotoxin models of PD, and isradipine is currently undergoing testing in a phase III clinical trial in early PD. We report no evidence for neuroprotection by in vivo pretreatment with therapeutically relevant isradipine plasma levels, or Cav1.3 LTCC deficiency in 6-OHDA-treated male mice. To explain this finding, we investigated the pharmacological properties of human LTCCs during SN DA-like and arterial smooth muscle (aSM)-like activity patterns using whole-cell patch-clamp recordings in HEK293 cells (Cav1.2 α1-subunit, long and short Cav1.3 α1-subunit splice variants; β3/α2δ1). During SN DA-like pacemaking, only Cav1.3 variants conducted Ca2+ current (ICa) at subthreshold potentials between action potentials. SN DA-like burst activity increased integrated ICa during (Cav1.2 plus Cav1.3) and after (Cav1.3) the burst. Isradipine inhibition was splice variant and isoform dependent, with a 5- to 11-fold lower sensitivity to Cav1.3 variants during SN DA-like pacemaking compared with Cav1.2 during aSM-like activity. Supratherapeutic isradipine concentrations reduced the pacemaker precision of adult mouse SN DA neurons but did not affect their somatic Ca2+ oscillations. Our data predict that Cav1.2 and Cav1.3 splice variants contribute differentially to Ca2+ load in SN DA neurons, with prominent Cav1.3-mediated ICa between action potentials and after bursts. The failure of therapeutically relevant isradipine levels to protect SN DA neurons can be explained by weaker state-dependent inhibition of SN DA LTCCs compared with aSM Cav1.2.SIGNIFICANCE STATEMENT The high vulnerability of dopamine (DA) neurons in the substantia nigra (SN) to neurodegenerative stressors causes Parkinson's disease (PD). Ca2+ influx through voltage-gated L-type Ca2+ channels (LTCCs), in particular Cav1.3, appears to contribute to this vulnerability, and the LTCC inhibitor isradipine is currently being tested as a neuroprotective agent for PD in a phase III clinical trial. However, in our study isradipine plasma concentrations approved for therapy were not neuroprotective in a PD mouse model. We provide an explanation for this observation by demonstrating that during SN DA-like neuronal activity LTCCs are less sensitive to isradipine than Cav1.2 LTCCs in resistance blood vessels (mediating dose-limiting vasodilating effects) and even at supratherapeutic concentrations isradipine fails to reduce somatic Ca2+ oscillations of SN DA neurons.
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Affiliation(s)
- Nadine J Ortner
- Department of Pharmacology and Toxicology, Center for Molecular Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
| | - Gabriella Bock
- Department of Pharmacology and Toxicology, Center for Molecular Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
| | - Antonios Dougalis
- Institute of Applied Physiology, University of Ulm, 89081 Ulm, Germany
| | - Maria Kharitonova
- Department of Pharmacology and Toxicology, Center for Molecular Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
| | - Johanna Duda
- Institute of Applied Physiology, University of Ulm, 89081 Ulm, Germany
| | - Simon Hess
- Biocenter, Institute for Zoology, and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
| | - Petronel Tuluc
- Department of Pharmacology and Toxicology, Center for Molecular Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
| | - Thomas Pomberger
- Department of Pharmacology and Toxicology, Center for Molecular Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
| | | | - Florian Pitterl
- Institute of Legal Medicine and Core Facility Metabolomics, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Thomas Ciossek
- Boehringer Ingelheim Pharma GmbH & Co KG, CNS Research, 88400 Biberach an der Riss, Germany, and
| | - Herbert Oberacher
- Institute of Legal Medicine and Core Facility Metabolomics, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Henning J Draheim
- Boehringer Ingelheim Pharma GmbH & Co KG, CNS Research, 88400 Biberach an der Riss, Germany, and
| | - Peter Kloppenburg
- Biocenter, Institute for Zoology, and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
| | - Birgit Liss
- Institute of Applied Physiology, University of Ulm, 89081 Ulm, Germany
| | - Jörg Striessnig
- Department of Pharmacology and Toxicology, Center for Molecular Biosciences, University of Innsbruck, 6020 Innsbruck, Austria,
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Lin CY, Hsieh HY, Chen CM, Wu SR, Tsai CH, Huang CY, Hua MY, Wei KC, Yeh CK, Liu HL. Non-invasive, neuron-specific gene therapy by focused ultrasound-induced blood-brain barrier opening in Parkinson's disease mouse model. J Control Release 2016; 235:72-81. [DOI: 10.1016/j.jconrel.2016.05.052] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/28/2016] [Accepted: 05/24/2016] [Indexed: 02/01/2023]
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